A voluntary asso



L. POETON.

TEMPLE.

APPLICATION FILED APRl I. Isis.

l ,$305,773. Patented June 17, 1919.

/NVENTOR LAIIRaNcz-z PoE-vomi WIZW LAWRENCE POETON, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR T0 AMERICAN OPTICAL COMPANY, 0F SOUTHBRIDG-E, MASSACHUSETTS, A VOLUNTARY ASSO- CIATION 0F MASSACHUSETTS.

To all whom t may concern Be it known that I, LAWRENCE PoEToN, a citizen of the United States, residing at Southbridge, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Temples, of which the following is a specification.

This invention relates to new and useful improvements in ophthalmic mountings and has particular reference to the temple especially adapted foruse on spectacles and the like, the leading object of the present invention being the provision of a novel and improved construction of temple which is commonly known as the combination type; that is, one which is composed of a metallic part and a non-metallic part securely joined together.

Another object of the present invention is the provision of a novel form of joint and method or process of forming said joint whereby the parts may be readily connected to each other and when so joined will securely hold against twisting or direct pulling tending to separate them and at the same time will provide a smooth surface and neat appearance.

A further object of the present invention is the provision of a temple constructed of almetallic and a non-metallic part joined together in such a manner that portions of the metallic part are co-engaged with the non metallic part in such a way that the two parts will be securely held against separation Y,

and wherein portions of the non-metallic part will at the same time co-engage with the metallic portion.

With the above and other objects in view the invention consists in the novel features of construction and the combination and arrangement of parts hereinafter more fully set forth, pointed out in the claims, and shown in the accompanying drawings in which- Figure I is a front elevation of a pair of spectacles constructed in accordance with my invention:

Fig. II is a side elevation of a temple constructed in accordance with my invention, parts thereof being broken away and illustrated in cross section:

Fig. III is a detailed elevation of a spectacle temple, parts thereof being broken Specification of Letters Patent.

TEMPLE.

Patented J une 17, 1919.

Application led April 1, 1918. vSerial No. 225,968.

away and shown in cross section so as to illustrate a slightly modified form of my invention:

Fig. IV is a similar view illustrating still another form of the invention:

Fig. V is a similar view illustrating still another form of the invention:

Fig. `VI is a transverse sectional view taken on the line V-V of Fig. V illustrating the metallic part of the temple:

Fig. VII is a side elevation of a temple, parts thereof being broken away and in section to illustrate another modiiied form of the invention:

Fig. VIII is a side elevation of a temple constructed in accordance with my invention, illustrating the use of a ferrule inclosing the connected ends of the two parts;

Figi IX is a detailed side elevation of a temple, parts thereof being broken away and in section t0 illustrate another modified form of the invention; and Y Fig. X is a detailed side elevation of the temple.

In the accompanying drawings it will be noted that various reference characters are used to designate theseveral parts throughout the diEerent views and wherein the numeral 1 is employed to indicate the bridge of an ophthalmic mounting having attached t0 its ends the frames 2 provided with the end pieces 3 to which are pivoted the temple butts 4 preferably of metal and having attached thereto in my improved manner the non-metallic ear-hook portions 5.

While various methods may be used to effect the joining of the ear-hook and butt portions of a temple of this character, it will be understood, however, that it must be neat and inconspicuous in appearance, must securely retain the parts against either twisting or longitudinal shifting, and the parts should bepreferably so interlocked that any expansion or stretching of the non-metallic part will not impair the durability and holding powers of the joint, therefore, providing a neat appearing joint which will securely connect the two parts of the temple.

In carrying out the various steps necessary in order to accomplish these results, the end of the metallic temple butt is split or kerfed as shown at 6 and having the terminal of the kerf milled out as at 7 to provide outwardly Haring walls with a short parallel portion at their bases, the ear-hook section being provided at the terminal of the longitudinalportion with a socket formed by drilling, and the kerfed end of the metallic butt being engaged within this socket. In the construction this socket is preferably slightly smaller than the circumference of the temple butt so that when the end of the temple butt is forced therein, and the kerfed portion strikes the inner end of the socket, the flaring portions thereof will be forced outwardly to engage with the non-metallic material of the ear-hook portion t0 retain the end of the temple butt against removal.

In order that additional means may be employed for engaging the metallic temple butt with the Vnon-'metallic material of the ear hook, a series of annular ribs S is formed on the kerfed end of the temple butt so that as this end is forced into the socket 7, the material of the ear-hook portion will engage with the ribs and provide additional means for securely retaining the two parts against longitudinal movement with respect to each other. It will be understood that in engaging these two parts, the ear-hook portion and the temple butt are each held in their respective clamps and the two parts are forcibly brought together so that when the ribbed end of the metallic part is engaged within the socket until the kerfed end thereof reaches the inner end of the socket, the flaring walls of the metallic part will be forced outwardly to co-engage with the non-metallic part of the ear hook and thus securely retain the two parts against longitudinal movement. It will be noted, however, that by forming the ribs 'upon the kerfed end of the metallic part, it will provide additional means for co-engagement with the non-metallic part to assist in retaining the two parts against detachment. y

In Fig. III I have illustrated a slightly modified form of the invention wherein the kerfed end of the temple butt is provided with a spiral groove as indicated at 9 and is adapted to cooperate with the non-metallic ear hook in a manner similar to the preferred form of the invention wherein the series of ribs S are used, it being understood that the spiral groove 9 will perform a similar function to that of the ribs. It will also be apparent that the temple butt and ear-hook portion will be securely connected together in the same manner as in the preferred form of the invention.

In Fig. IV I have illustrated another form of the invention wherein the kerfed end of the temple butt is provided upon its exterior with a plurality of outwardlyprojecting spur members 10 which are arranged in staggered relation around the end of the temple butt, the points thereof being directed toward the end opposite the kerfed portion so that when the kerfed end of the Y' temple butt is engaged within the ear-hook of `the kerfed end of the temple butt is provided with a series of indentations ll arranged in staggered relation the same as the spur members l0, and itwill be apparent that when-the kerfed end of the temple butt is forced into the socket and the Haring walls thereof forced into spreading engagement with the non-metallic material, the material will be forced into theseindentaticns and provide means in addition to the flaring walls, for retaining the two parts together and holding them against longitudinal movementl with respect to each other. In this form of the invention', however, it is preferable that the non-metallic material be slightly heated so that it will readily engage within the intentations 11 in the metal ic part when the metallic part is forced into the socket. i From the foregoing description taken in connection with the accompanying drawings the construction and advantages of my improved temple for opthalmio mountings should be readily appreciated, and it will be seen that inthe use of my improved joint the parts are firmly held by the adversely bent flanges against separation by a longitudinal p'ulland are additionally retained against movement by having the metallic temple end co-engage with portions of the non-metallic material of the ear hook so as to eliminate the possibility of longitudinal movements of the parts.` Itwill benoted that in Fig, VII I have illustrated that form of the'invention wherein the longitudinal bore 12' in thenon-metallic ear hook Vis slightly greater in diameter than the metallic'portion of the temple so that the kerfed end of the temple can be readily inserted within the bore. In this form of the invention as statedheretofore, the metallic portion is loosely engaged within the bore and pressure is brought to bea-r upon the non-metallic portion to engage the same with the metallic portion of the temple so that the materialof the ear hook will be forced into the grooves formed by the ribs 8', thus securely engaging the two parts of the temple to prevent any longitudinal movement of either one of the parts. It is to be understood that this form of the invention can be usedequally as well as the form illustrated in Figs. I to VI wherein thc metal part is forced longitudinally within the bore of the non-metallic part.

It will be noted that in assembling this form of invention illustrated in Fig. VII, the metallic .part is placed within the bore and then forced longitudinally so that the projections of the kerfed end thereof will engage within the material of the non-metallic part, clearly as illustrated, and thus cooperate with the ribs in holding the two parts against longitudinal movement.

In Fig. VIII I have illustrated still' another form of the invention wherein I provide a ferrule 13 adapted to be engaged over the inner end of the ear hook and which eX- tends back onto the non-metallic portion of the ear hook to a point somewhat beyond the outwardly projecting points of the lerfed end of the metallic part so as to provide additional strength to the temple at the connection between lthe metallic and non-metallic parts. This ferrule not only provides for additional strengthening means but incloses the connection so that the manner in which the two parts are connected is obscure.

In Figs. IX and X I have illustrated anlother form of the invention wherein a metallic band as illustrated at la is applied to the exterior of the non-metallic portion of the temple and forcibly engaged therewith. It will be apparent from the illustration in Fig. IX that when this metallic band 14: is applied to the temple it is forced into the material of the non-metallic part until the exterior of the band is flush with the exterior of the non-metallic part of the temple. Thus in Fig. IX it will be noted that the kerfed end of the metallic portion of the temple has been engaged within the bore of the non-metallic part and pressure brought to bear upon the non-metallic part so as to force the same into engagement with the ribbed portion of the metallic part. After this operation has been carried out, the band 14 is applied to the exterior of the temple and forcibly applied thereto as illustrated to provide a firm connection between the two parts.

I claim:

1. In a temple, the combination with a non-metallic ear hook having a longitudinal bore, of a metallic butt section of a smaller diameter than the diameter of the bore, prongs carried by the butt section and adapted to be forced into the walls of the bore at the inner end thereof, and the butt section being provided with recessed portions adapted to receive portions of the non-metallic ear hook to interlock therewith upon the application of pressure to the non-metallic portion for retaining the parts together as and for the purpose set forth.

2. The combination with a non-metallic ear hook having a longitudinal bore, of a metallic butt section having prongs inserted w-ithin the bore and adapted for engagement with the walls of the bore at the inner end thereof, said butt section having means carried thereby for engagement with the walls of the bore and adapted to interlock therewith upon the application of pressure to the non-metallic section to assist the prongs in retaining the parts together, and additional bracing means engaged with the non-metallic ear hook to cooperate with the prongs to retain the parts together as and for the purpose set forth.

In testimony whereof I have ailixed my signature, in presence of two witnesses.

LAWRENCE POETON.

Vitnesses:

I-I. E. COLEMAN, A. S. CANN.

Copies of this patent may heobtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

